Patent US1471935A successfully refreshed from Google Patents.
US1471935A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Machine for the cleansing of the bottoms and sides of floating ships
Assignee: Individual
•
Filing: 1923-01-30
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Granted: 1923-10-23
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Expires: 1943-01-30
Abstract
No abstract record available.
Inventors
- 👤 Arentz Hjalmar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 01:12
CPC Classifications
B; B63; B63B; B63B59/00; B63B59/06; B63B59/08; B63B59/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1926-10-22 | 1927-04-23 | 1927-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1930-10-22 | 1931-04-23 | 1931-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1934-10-22 | 1935-04-23 | 1935-10-23 | $7700.00 | Window Closed / Lapsed |